基于C++的小超市食品管理系统

功能模块设计

基于C++语言实现的小超市食品管理系统，采用面向对象的思维进行设计，包含以下功能模块：

• 显示库存及销售记录
• 添加库存食品
• 删除库存食品
• 修改库存食品
• 查询库存食品
• 库存食品排序
• 食品销售
• 清空系统数据

主要运行界面

• 主菜单界面

• 显示库存及销售记录界面

• 添加库存食品界面

• 食品销售界面

系统完整代码

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <algorithm>
#include <string>
#include <iomanip>
#include <fstream>
#include <vector>
#include <sstream>
#include <ctime>
using namespace std;
//工具类
class Tool
{
	public:
		//获取系统当前时间
		static string getTime()
		{
			time_t t = time(NULL);
			struct tm* now = localtime(&t);
			std::stringstream time;
			time << now->tm_year + 1900 << "-";
			time << now->tm_mon + 1 << "-";
			time << now->tm_mday << "_";
			time << now->tm_hour << ":";
			time << now->tm_min << ":";
			time << now->tm_sec;
			return time.str();
		}
};
//食品类
class Food
{
	public:
		string foodName;    //食品名称
		double foodAmount;  //食品库存量
		string foodUnit;    //食品单位 如 吨、艘、个、斤
		string foodKind;    //食品种类
		//无参构造
		Food()
		{
		}
		//有参构造
		Food(string foodName, double foodAmount, string foodUnit,string foodKind)
		{
			this->foodName = foodName;
			this->foodAmount = foodAmount;
			this->foodUnit = foodUnit;
			this->foodKind = foodKind;
		}
		//析构
		~Food()
		{
		}
		//输出
		void showFdInfo()
		{
			cout << left << setw(16) << foodName;
			cout << left << setw(10) <<  foodAmount;
			cout << left << setw(10) <<  foodUnit;
			cout << left << setw(10) <<  foodKind << endl;
		}
		//输出属性名，只显示总积分
		static void showHeader()
		{
			cout << left << setw(16) << "名称";
			cout << left << setw(10) <<  "库存量";
			cout << left << setw(10) << "单位";
			cout << left << setw(10) <<  "种类" << endl;
		}
};
//销售记录类
class Record
{
	public:
		string foodName;    //食品名称
		double foodAmount;  //变更数量
		string foodUnit;    //食品单位
		double foodPrice;   //售出单价
		double eachPrice;   //本单收入
		string updateTime;  //发生时间
		double totalPrice;  //总的销售额 = 收入 - |支出|

		void showRecInfo()
		{
			cout << left << setw(12) << foodName;
			cout << left << setw(8) <<  foodAmount;
			cout << left << setw(8) <<  foodUnit;
			cout << left << setw(10) <<  foodPrice;
			cout << left << setw(10) <<  eachPrice;
			cout << left << setw(20) <<  updateTime << endl;
		}
		//输出属性名
		static void showHeader()
		{
			cout << left << setw(12) << "名称";
			cout << left << setw(8) <<  "数量";
			cout << left << setw(8) <<  "单位";
			cout << left << setw(10) << "单价";
			cout << left << setw(10) << "本单收入";
			cout << left << setw(20) <<  "销售时间" << endl;
		}
};

//超市管理系统类
class FoodSystem
{
	public:
		vector<Food> flist; //货物库存
		vector<Record> rlist; //销售记录
		FoodSystem() { }
		FoodSystem(vector<Food> flist,vector<Record> rlist)
		{
			this->flist = flist;
			this->rlist = rlist;
		}

		//初始化
		void init()
		{
			readFile(); //读取文件
		}

		//读取文件
		void readFile()
		{
			//读取库存文件
			ifstream ifs;
			ifs.open("flist.txt", ios::in);
			Food f;
			while(ifs >> f.foodName >> f.foodAmount >> f.foodUnit >> f.foodKind)
			{
				flist.push_back(f);
			}
			ifs.close();
			//读取操作记录文件
			ifstream jfs;
			jfs.open("rlist.txt", ios::in);
			Record r;
			while(jfs >> r.foodName >> r.foodAmount >> r.foodUnit >> r.foodPrice >> r.eachPrice >> r.updateTime >> r.totalPrice)
			{
				rlist.push_back(r);
			}
			jfs.close();
		}
		//写入文件
		void writeFile()
		{
			//写入库存文件
			ofstream ofs;
			ofs.open("flist.txt", ios::out);
			for (int i = 0; i < flist.size(); i++)
			{
				ofs << flist[i].foodName << " " << flist[i].foodAmount << " " << flist[i].foodUnit << " " << flist[i].foodKind << endl;
			}
			ofs.close();
			//写入操作记录文件
			ofstream pfs;
			pfs.open("rlist.txt", ios::out);
			for (int i = 0; i < rlist.size(); i++)
			{
				pfs << rlist[i].foodName << " " << rlist[i].foodAmount << " " << rlist[i].foodUnit
				    << " " << rlist[i].foodPrice << " " << rlist[i].eachPrice << " " << rlist[i].updateTime
				    << " " << rlist[i].totalPrice << endl;
			}
			pfs.close();
		}
		//管理员菜单
		void menu()
		{
			string sel = "0";
			system("cls");
			cout << "\t\t\t*********欢迎来到小超市食品管理系统*********" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        1   显示库存及销售记录            |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        2   添加库存食品                  |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        3   删除库存食品                  |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        4   修改库存食品                  |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        5   查询库存食品                  |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        6   库存食品排序                  |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        7   食品销售                      |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        8   清空系统数据                  |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t|        0   退出                          |" << endl;
			cout << "\t\t\t|------------------------------------------|" << endl;
			cout << "\t\t\t请选择【0-8】：";
			cin >> sel;
			while(sel != "0" && sel != "1" && sel != "2" && sel != "3" && sel != "4" && sel != "5" && sel != "6" && sel != "7" && sel != "8")
			{
				cout << "\t\t\t输入不合法,请重新选择【0-8】：";
				cin >> sel;
			}
			if(sel == "1")
			{
				this->display();  //显示库存
				this->menu();
			}
			else if(sel == "2")
			{
				this->insertFood();
				this->menu();
			}
			else if(sel == "3")
			{
				this->deleteFood();
				this->menu();
			}
			else if(sel == "4")
			{
				this->updateFood();
				this->menu();
			}
			else if(sel == "5")
			{
				this->selectFood();
				this->menu();
			}
			else if(sel == "6")
			{
				this->sortFood();
				this->menu();
			}
			else if(sel == "7")
			{
				this->sellFood();
				this->menu();
			}
			else if(sel == "8")
			{
				this->clearSystem();
				this->menu();
			}
			else if(sel == "0")
			{
				exit(0);
			}
		}
		//遍历食品容器 clist
		void traverseFood()
		{
			cout << "\t\t-------------------------------------------" << endl;
			cout<<"\t\t";
			Food::showHeader();
			cout << "\t\t-------------------------------------------" << endl;
			for (int i = 0; i < flist.size(); i++)
			{
				cout << "\t\t";
				flist[i].showFdInfo();
			}
			cout << "\t\t-------------------------------------------" << endl;
		}
		//遍历记录容器 rlist
		void traverseRecord()
		{
			cout << "\t\t------------------------------------------------------------------" << endl;
			cout<<"\t\t";
			Record::showHeader();
			cout << "\t\t------------------------------------------------------------------" << endl;
			for (int i = 0; i < rlist.size(); i++)
			{
				cout << "\t\t";
				rlist[i].showRecInfo();
			}
			cout << "\t\t------------------------------------------------------------------" << endl;
		}

		//显示信息列表  包含库存和历史操作记录
		void display()
		{
			system("cls");
			cout << "\t\t********************欢迎来到显示信息列表功能**********************" << endl;
			cout << "\t\t表1：超市库存信息表"<<endl;
			this->traverseFood();
			cout<<"\t\t食品种类数量（注意：此处按名称细分）："<<flist.size()<<"种"<<endl;
			cout << "\n\t\t表2：销售记录信息表"<<endl;
			this->traverseRecord();
			if(rlist.size() == 0)
			{
				cout<<"\t\t当前销售总额： ￥0"<<endl;
			}
			else
			{
				cout<<"\t\t当前销售总额： ￥"<< rlist.back().totalPrice << endl;
			}
			cout << "\n\t\t";
			system("pause");
		}
		//添加库存食品
		void insertFood()
		{
			while(true)
			{
				system("cls");
				cout << "\t\t*****************欢迎来到添加库存食品功能*********************" << endl;
				//显示当前库存信息
				cout<< "\t\t当前库存："<<endl;
				traverseFood();
				cout<<endl;
				cout << "\t\t------------------" << endl;
				cout << "\t\t1 添加库存食品" << endl;
				cout << "\t\t2 返回主菜单" << endl;
				cout << "\t\t------------------" << endl;
				cout << "\t\t请选择【1-2】：";
				string sel;
				cin >> sel;
				while(sel != "1" && sel != "2")
				{
					cout << "\t\t输入不合法,请重新输入【1-2】：";
					cin >> sel;
				}
				if(sel == "1")
				{
					string flag = "1";
					while (flag == "1")
					{
						Food f;
						cout << "\t\t输入添加的食品信息："<<endl;
						cout << "\t\t食品名称：";
						cin >> f.foodName;
						bool check = false;
						for(int i = 0; i < flist.size(); ++i)
						{
							if(f.foodName == flist[i].foodName)
							{
								cout<<"\t\t系统中已存在该食品，如要添加该食品库存，请通过修改功能直接修改此食品库存!"<<endl;
								check = true;
								break;
							}
						}
						if(check) break;
						cout<<"\t\t添加数量：";
						cin>>f.foodAmount;
						cout<<"\t\t食品单位：";
						cin>>f.foodUnit;
						cout<<"\t\t食品种类：";
						cin>>f.foodKind;
						flist.push_back(f);
						writeFile();
						cout << "\n\t\t添加成功！是否继续添加？（1 是 0 否）" << endl;
						cout << "\t\t请进行选择【0-1】：";
						cin >> flag;
						while(flag != "0" && flag != "1")
						{
							cout << "\t\t输入不合法,请重新选择【0-1】：";
							cin >> flag;
						}
					}
					cout << "\t\t";
					system("pause");
				}
				else
				{
					break;
				}
			}
		}

		//删除库存食品
		void deleteFood()
		{
			while (true)
			{
				system("cls");
				cout << "\t\t*********************欢迎来到删除库存食品功能*********************" << endl;
				cout << "\t\t当前库存："<<endl;
				traverseFood();
				cout << endl;
				string sel = "0";
				cout << "\t\t-----------------" << endl;
				cout << "\t\t1 按食品名称删除" << endl;
				cout << "\t\t2 返回主菜单" << endl;
				cout << "\t\t-----------------" << endl;
				cout << "\t\t请进行选择【1-2】：";
				cin >> sel;
				while(sel != "1" && sel != "2")
				{
					cout << "\t\t输入不合法,请重新选择【1-2】：";
					cin >> sel;
				}
				if (sel == "1")
				{
					string keyName;
					bool flag = false;
					cout << "\t\t请输入待删除食品的名称：";
					cin >> keyName;
					for (vector<Food>::iterator it = flist.begin(); it != flist.end(); ++it)
					{
						if (it->foodName == keyName)
						{
							flag = true;
							cout << "\t\t待删除食品的库存信息如下：" << endl;
							cout << "\t\t-------------------------------------------" << endl;
							cout<<"\t\t";
							Food::showHeader();
							cout << "\t\t-------------------------------------------" << endl;
							cout<<"\t\t";
							it->showFdInfo();
							cout << "\t\t-------------------------------------------" << endl;

							cout << "\t\t确认删除？（1 是 0 否）" << endl;
							cout << "\t\t请进行选择【0-1】：";
							string ch = "0";
							cin >> ch;

							while(ch != "0" && ch != "1")
							{
								cout << "\t\t输入不合法,请重新选择【0-1】：";
								cin >> ch;
							}
							if (ch == "0") break;
							else
							{
								flist.erase(it);
								writeFile();
								cout << "\t\t删除成功！" << endl;
								break;
							}
						}
					}
					if (!flag) cout << "\t\t超市中没有此类食品，无法删除！\n" << endl;
					cout << "\t\t";
					system("pause");
				}
				else
				{
					break;
				}
			}
		}

		//修改食品库存信息
		void updateFood()
		{
			while(true)
			{
				system("cls");
				cout << "\t\t******************欢迎来到修改食品库存信息功能******************" << endl;
				cout << "\t\t当前库存："<<endl;
				traverseFood();
				cout << endl;
				string sel = "0";
				cout << "\t\t--------------------" << endl;
				cout << "\t\t1 按食品名称修改库存" << endl;
				cout << "\t\t2 返回主菜单" << endl;
				cout << "\t\t--------------------" << endl;
				cout << "\t\t请进行选择【1-2】：";
				cin >> sel;
				while(sel != "1" && sel != "2" )
				{
					cout << "\t\t输入不合法,请重新选择【1-2】：";
					cin >> sel;
				}
				if(sel == "1")
				{
					bool flag = false;
					string keyName;
					cout << "\t\t请输入待修改库存的食品名称：";
					cin >> keyName;
					for(int i = 0; i < flist.size(); i++)
					{
						if (flist[i].foodName == keyName)
						{
							flag = true;
							cout << "\t\t待修改食品的库存信息如下：" << endl;
							cout << "\t\t-------------------------------------------" << endl;
							cout<<"\t\t";
							Food::showHeader();
							cout << "\t\t-------------------------------------------" << endl;
							cout<<"\t\t";
							flist[i].showFdInfo();
							cout << "\t\t-------------------------------------------" << endl;
							Food f;
							f.foodName = flist[i].foodName;
							cout << "\t\t请输入修改后的食品库存量：";
							cin>> f.foodAmount;
							cout << "\t\t请输入修改后的食品单位：";
							cin >> f.foodUnit;
							cout << "\t\t请输入修改后的食品种类：";
							cin >> f.foodKind;
							cout << "\t\t是否确认修改？（1 是 0 否）" << endl;
							cout << "\t\t请进行选择【0-1】：";
							string ch = "0";
							cin >> ch;
							while(ch != "0" && ch != "1")
							{
								cout << "\t\t输入不合法,请重新选择【0-1】：";
								cin >> ch;
							}

							if (ch == "0") break;
							else
							{
								flist[i] = f;
							}
							writeFile();
							cout << "\t\t修改成功！" << endl;
							break;
						}
					}
					if (!flag) cout << "\t\t无法查询到此线路，无法修改！\n" << endl;
					cout<<"\t\t";
					system("pause");
				}
				else
				{
					break;
				}
			}
		}

		// 查询食品库存信息
		void selectFood()
		{
			while (true)
			{
				system("cls");
				cout << "\t\t****************欢迎来到查询食品库存信息功能******************" << endl;
				cout << "\t\t-----------------" << endl;
				cout << "\t\t1 按食品名称查询" << endl;
				cout << "\t\t2 按食品种类查询" << endl;
				cout << "\t\t3 返回主菜单" << endl;
				cout << "\t\t-----------------" << endl;
				cout << "\t\t请进行选择【1-3】：";
				string sel = "0";
				cin >> sel;
				while(sel != "1" && sel != "2" && sel != "3")
				{
					cout << "\t\t输入不合法,请重新选择【1-3】：";
					cin >> sel;
				}
				if (sel == "1")
				{
					string keyName;
					bool flag = false;
					cout << "\t\t请输入待查询食品的名称：";
					cin >> keyName;
					cout << "\t\t查询结果如下：" << endl;
					cout << "\t\t-------------------------------------------" << endl;
					cout<<"\t\t";
					Food::showHeader();
					cout << "\t\t-------------------------------------------" << endl;
					for (int i = 0; i < flist.size(); i++)
					{
						if (flist[i].foodName == keyName)
						{
							flag = true;
							cout<<"\t\t";
							flist[i].showFdInfo();
							cout << "\t\t-------------------------------------------" << endl;
							break;
						}
					}
					if (!flag) cout << "\t\t超市中不存在此种食品！\n" << endl;
					cout << "\t\t";
					system("pause");
				}
				else if (sel == "2")
				{
					string keyKind;
					bool flag = false;
					cout << "\t\t请输入待查询食品的种类：";
					cin >> keyKind;
					cout << "\t\t查询结果如下：" << endl;
					cout << "\t\t-------------------------------------------" << endl;
					cout<<"\t\t";
					Food::showHeader();
					cout << "\t\t-------------------------------------------" << endl;
					for (int i = 0; i < flist.size(); i++)
					{
						if (flist[i].foodKind == keyKind)
						{
							flag = true;
							cout<<"\t\t";
							flist[i].showFdInfo();
						}
					}
					cout << "\t\t-------------------------------------------" << endl;
					if (!flag) cout << "\t\t超市中不存在此类食品！\n" << endl;
					cout << "\t\t";
					system("pause");
				}
				else
				{
					break;
				}
			}
		}
		//将食品列表按食品名称字典序升序排列
		static bool cmp(const Food& f1,const Food& f2)
		{
			return f1.foodName < f2.foodName;
		}
		void sortFood()
		{
			while(true)
			{
				system("cls");
				cout << "\t\t******************欢迎来到食品排序功能*********************" << endl;
				cout<<"\t\t库存信息表："<<endl;
				traverseFood();
				cout<<endl;
				string sel;
				cout << "\t\t-----------------" << endl;
				cout << "\t\t1 按食品名称字典序排序" << endl;
				cout << "\t\t2 返回主菜单" << endl;
				cout << "\t\t-----------------" << endl;
				cout << "\t\t请进行选择【1-2】：";
				cin >> sel;
				while(sel != "1" && sel != "2")
				{
					cout << "\t\t输入不合法,请重新选择【1-2】：";
					cin >> sel;
				}
				if(sel == "1")
				{
					sort(flist.begin(), flist.end(), cmp);
					cout<<"\t\t排序成功！"<<endl;
					cout<<"\t\t";
					system("pause");
				}
				else
				{
					break;
				}

			}
		}


		//售货 即添加元素到rlist中  从clist中 删除元素
		void sellFood()
		{
			while (true)
			{
				system("cls");
				cout << "\t\t*******************欢迎来到食品销售功能***********************" << endl;
				//显示当前库存信息
				cout<< "\t\t超市当前库存："<<endl;
				traverseFood();
				cout<<endl;
				string sel = "0";
				cout << "\t\t-----------------" << endl;
				cout << "\t\t1 销售食品" << endl;
				cout << "\t\t2 返回主菜单" << endl;
				cout << "\t\t-----------------" << endl;
				cout << "\t\t请进行选择【1-2】：";
				cin >> sel;
				while(sel != "1" && sel != "2")
				{
					cout << "\t\t输入不合法,请重新选择【1-2】：";
					cin >> sel;
				}
				if(sel == "1")
				{
					string keyName;
					bool flag = false;
					cout << "\t\t请输入待售食品的名称：";
					cin >> keyName;
					for (vector<Food>::iterator it = flist.begin(); it != flist.end(); ++it)
					{
						if (it->foodName == keyName)
						{
							flag = true;
							cout << "\t\t"<< it->foodName << "的当前库存如下：" << endl;
							cout << "\t\t-------------------------------------------" << endl;
							cout<<"\t\t";
							Food::showHeader();
							cout << "\t\t-------------------------------------------" << endl;
							cout<<"\t\t";
							it->showFdInfo();
							cout << "\t\t-------------------------------------------" << endl;
							cout << "\t\t确认进行销售？（1 是 0 否）" << endl;
							cout << "\t\t请进行选择【0-1】：";
							string ch = "0";
							cin >> ch;
							while(ch != "0" && ch != "1")
							{
								cout << "\t\t输入不合法,请重新选择【0-1】：";
								cin >> ch;
							}
							if (ch == "0") break;
							else
							{
								Record r;
								r.foodName = it->foodName;
								r.foodUnit = it->foodUnit;
								cout<<"\t\t请输入销售数量：";
								cin>>r.foodAmount;
								while(r.foodAmount > it->foodAmount)
								{
									cout<<"\t\t已超出库存数量，请重新输入：";
									cin>>r.foodAmount;
								}
								cout<<"\t\t请输入售出单价：";
								cin>>r.foodPrice;
								r.eachPrice = r.foodPrice * r.foodAmount;
								r.updateTime = Tool::getTime();
								if(rlist.size() == 0)
								{
									r.totalPrice = r.foodPrice * r.foodAmount;
								}
								else
								{
									r.totalPrice = rlist.back().totalPrice + r.foodPrice * r.foodAmount;
								}
								if(r.foodAmount == it->foodAmount)
								{
									flist.erase(it);
								}
								else
								{
									it->foodAmount -= r.foodAmount;
								}
								rlist.push_back(r);
								writeFile();
								cout << "\t\t销售成功！" << endl;
								break;
							}
						}
					}
					if (!flag) cout << "\t\t本超市中没有此类食品，无法销售！\n" << endl;
					cout << "\t\t";
					system("pause");
				}
				else
				{
					break;
				}
			}
		}

		//清空系统数据
		void clearSystem()
		{
			while (true)
			{
				string sel = "0";
				system("cls");
				cout << "\t\t******************欢迎来到清空系统数据功能*******************" << endl;
				cout << "\t\t------------------" << endl;
				cout << "\t\t1 确认清空系统数据" << endl;
				cout << "\t\t2 返回主菜单" << endl;
				cout << "\t\t------------------" << endl;
				cout << "\t\t请慎重选择【1-2】：";
				cin >> sel;
				while(sel != "1" && sel != "2")
				{
					cout << "\t\t输入不合法,请重新输入【1-2】：";
					cin >> sel;
				}
				if (sel == "1")
				{
					flist.clear();
					rlist.clear();
					cout << "\t\t清空成功！" << endl;
					cout << "\t\t";
					system("pause");
					writeFile();
				}
				else
				{
					break;
				}
			}
		}
};

int main()
{
	FoodSystem fs;
	fs.init();
	fs.menu();
	return 0;
}

运行方法

1. 新建一个cpp文件，命名为”main.cpp”。
2. 将系统完整代码复制粘贴至”main.cpp”中。
3. 利用Dev C++运行”main.cpp”即可。